#include <stdio.h>
const float pi=3.1415926535;
int main()
{
    double R,V1,V2;
    while (scanf("%lf%lf%lf",&R,&V1,&V2)!=EOF)
    {
        double r,t1,t2;
        r=V1*R/V2;
        t1=(R-r)/V1;
        t2=pi*R/V2;
        if (t1<t2)printf("Yes\n");
        else printf("No\n");
    }
    return 0;
}
